<script setup>
    import { Plus, Upload } from "@element-plus/icons-vue";
    import { ref } from "vue";
    import avatar from "@/assets/default.png";
    import { ElMessage } from "element-plus";
    // 引入用户 pinia
    import { useUserInfoStore } from "@/stores/userInfo.js";
    const userInfoStore = useUserInfoStore();
    // 引入 token pinia
    import { useTokenStore } from "@/stores/token.js";
    const tokenStore = useTokenStore();
    // 引入 api 接口
    import { updateAvatar } from "@/api/user.js";

    const uploadRef = ref();

    //用户头像地址
    const imgUrl = ref(
        userInfoStore.userInfo.userPic ? userInfoStore.userInfo.userPic : avatar
    );

    // 用户上传头像成功钩子函数
    const uploadSuccess = img => {
        imgUrl.value = img.data;
    };

    // 用户点击上传头像函数
    const uploadAvatar = async () => {
        const result = await updateAvatar(imgUrl.value);
        ElMessage.success(result.message ? result.message : "修改成功");
        // 更新 pinia 中的 user 头像
        userInfoStore.userInfo.userPic = imgUrl.value;
    };
</script>

<template>
    <el-card class="page-container">
        <template #header>
            <div class="header">
                <span>更换头像</span>
            </div>
        </template>
        <el-row>
            <el-col :span="12">
                <el-upload
                    ref="uploadRef"
                    class="avatar-uploader"
                    :show-file-list="false"
                    :auto-upload="true"
                    action="/api/upload"
                    name="file"
                    :headers="{ Authorization: tokenStore.token }"
                    :on-success="uploadSuccess"
                >
                    <img v-if="imgUrl" :src="imgUrl" class="avatar" />
                    <img v-else src="avatar" width="278" />
                </el-upload>
                <br />
                <el-button
                    type="primary"
                    :icon="Plus"
                    size="large"
                    @click="uploadRef.$el.querySelector('input').click()"
                >
                    选择图片
                </el-button>
                <el-button
                    type="success"
                    :icon="Upload"
                    size="large"
                    @click="uploadAvatar"
                >
                    上传头像
                </el-button>
            </el-col>
        </el-row>
    </el-card>
</template>

<style lang="scss" scoped>
    .avatar-uploader {
        :deep() {
            .avatar {
                width: 278px;
                height: 278px;
                display: block;
            }

            .el-upload {
                border: 1px dashed var(--el-border-color);
                border-radius: 6px;
                cursor: pointer;
                position: relative;
                overflow: hidden;
                transition: var(--el-transition-duration-fast);
            }

            .el-upload:hover {
                border-color: var(--el-color-primary);
            }

            .el-icon.avatar-uploader-icon {
                font-size: 28px;
                color: #8c939d;
                width: 278px;
                height: 278px;
                text-align: center;
            }
        }
    }
</style>
